Finally! Google has released version 4.0 of Chrome for Windows, bringing the much-anticipated extensions framework out of beta and into the stable channel. Currently, more than 1500 extensions are already available. Version 4.0 carries more features than just extensions, though.

Mac users still have a lot to wait for though, as they don't even have extensions yet.

Chrome for Mac, in the dev channel, has almost feature-parity with Chrome 4 final Windows.

I've been using it as my primary – and only – browser for two or three months and extensions have been working for a few weeks now. I personally use Flashblock (who can live without it?) and Google Wave Notifier (I still want to believe) without any glitch.

Bookmark sync works too and, if the bookmark manager still needs a bit of polish, Chrome for Mac's stability is perfect – never experienced a crash with it.

Other companies than Google would not call it a dev version, but a final version. If you are on a Mac, try it, you cannot find a better browser (and I don't think you'll be able to find one for some time).